In August 2004 he was signed by Livorno. In January 2007, Carmine Coppola changed club with Giallombardo. Giallombardo played his first Messina Serie A match on 14 January 2007 against former club Roma[3]

In July 2007, Giallombardo was sold to Ascoli in another co-ownership deal. In June 2008 Ascoli acquired him outright.

In January 2011 he was signed by Grosseto in temporary deal.[4] On 23 August 2011 the loan was extended, with Andrea Soncin moved to Ascoli.[5]

In 2012 he returned to Ascoli but in January 2013 left for Lega Pro Prima Divisione club Latina. In 2013 Giallombardo returned to Ascoli again for his last year of the contract, which Ascoli had relegated in June 2013.

on 30 July 2013 Giallombardo was transferred to Serie A club Parma F.C. along with Mirko Ronchi. Ronchi immediately returned to Ascoli and Giallombardo was farmed to Gubbio. In 2014 he failed to find a club to borrow him from Parma, thus he was allowed to stay at home despite under contract with Parma.[6]